Dynarex 33955 Resp-O2 Portable Oxygen Concentrator
Executive Product Overview
The Dynarex Resp-O2 Portable Oxygen Concentrator (MPN 33955) delivers pulse-dose supplemental oxygen across six physician-prescribed settings, maintaining 90% oxygen concentration (-3% / +6%) at every setting from 210 mL/min up to 1,260 mL/min total output. Breath-detection technology times each dose to the start of inhalation, and visual and audible alarms flag low battery, low oxygen purity, or a no-breath-detected condition — giving clinical staff and home-care patients consistent, monitored delivery without manual adjustment.
At 4.76 lb with the included 8-cell battery, the unit is built for portability across home health, professional facility, and travel use, backed by up to 4 hours 20 minutes of runtime on setting 1 (extendable with an optional 16-cell double battery). The device is not made with natural rubber latex and has been determined by the manufacturer to conform to applicable FAA acceptance criteria for POC carriage and use on board aircraft, supporting facilities that need a documented, travel-compatible oxygen therapy option for their patient population.
Key Technical & Operational Features
- Six pulse-dose settings (210–1,260 mL/min total output), prescribed by a physician, tested to ISO 80601-2-67 (±15%)
- 90% oxygen concentration (-3% / +6%) maintained at all six settings
- Breath-detection technology delivers the dose at the start of each inhalation; max breathing rate 40 BPM
- Visual and audible alarms for low battery, low oxygen purity, and no breath detected
- Lightweight, ergonomic design — 3.62 lb without battery, 4.76 lb with 8-cell battery — with included carrying bag and shoulder strap
- Simple, easy-to-read LCD display with straightforward controls
- Quiet operation at 43 dBA typical at setting 2
- FAA acceptance criteria conformance for POC carriage and in-flight use, per manufacturer determination
- Not made with natural rubber latex
- Flexible power: AC power supply/cord, DC adapter, and rechargeable 8-cell lithium-ion battery (94.72 Wh, 14.8V DC); optional 16-cell double battery for extended runtime
Standardizing on a single portable oxygen concentrator SKU across home health, discharge planning, and travel-oxygen programs reduces the training burden on clinical staff and simplifies battery, filter, and cannula stock reconciliation. Documented FAA acceptance criteria conformance also reduces friction and liability exposure when patients travel by air, and consistent alarm behavior across your fleet supports standardized in-service training and incident reporting for supply chain and risk management teams.
Complete Technical Specifications
| Brand | Dynarex |
| Model / MPN | 33955 (Resp-O2 Portable Oxygen Concentrator) |
| Delivery Mode | Pulse Dose |
| Pulse Dose Settings | 6 (settings 1 through 6) |
| Oxygen Output (total per minute) | Setting 1 = 210 mL/min, 2 = 420, 3 = 630, 4 = 840, 5 = 1050, 6 = 1260 mL/min (0.21–1.26 L/min). Pulse volume per breath varies with breathing rate; tested to ISO 80601-2-67, ±15% |
| Oxygen Concentration | 90% (-3% / +6%) at all settings |
| Weight | 3.62 lb (1.64 kg) without battery; 4.76 lb (2.16 kg) with 8-cell battery |
| Dimensions (with 8-cell battery) | 8.6 x 3.5 x 7.4 in (21.7 x 8.8 x 18.7 cm) |
| Battery Life | Up to 4 hours 20 minutes on setting 1 (single 8-cell battery); optional 16-cell double battery available |
| Recharge Time | Up to 5 hours while operating on AC; up to 3 hours when off and on AC |
| Sound Level | 43 dBA typical at setting 2 |
| Warm-Up | Up to 2 minutes |
| Max Breathing Rate | 40 BPM |
| Power | AC adapter 100-240V, 50/60 Hz; battery 14.8V DC, 94.72 Wh lithium-ion (8-cell) |
| Operating Environment | 41°F to 104°F (5°C to 40°C), 15% to 90% RH non-condensing, 0 to 10,000 ft |
| Sterility / Protection Level | Not provided — verify with manufacturer |
| Packaging Yield | 1 unit per case |
| Included Contents | Portable Oxygen Concentrator; 8-Cell Battery; Power Supply (AC Adapter); AC Power Cord; DC Adapter; Nasal Cannula; Filter Kit; Carrying bag with shoulder strap |
| Industry Codes | HCPCS: E1390 + E1392; UNSPSC: Not provided — verify with manufacturer |
| Country of Origin | China |
Procurement & Compliance FAQs
Can our facility order the Resp-O2 in bulk, and how is it packaged for procurement?
The Resp-O2 Portable Oxygen Concentrator (Dynarex 33955) ships 1 unit per case. Contact your EnhDme-Pro account representative for bulk quantity pricing and lead times on multi-unit facility orders.
Is this device restricted to prescription sale, and where can we review the applicable policy?
Yes. This is an Rx-only device — federal (USA) law restricts sale of this device to, or on the order of, a physician. Review EnhDme-Pro's Prescription (Rx) Policy for documentation requirements before ordering.
What oxygen output and concentration should we expect across the six pulse-dose settings?
Output ranges from 210 mL/min at setting 1 up to 1,260 mL/min at setting 6 (0.21–1.26 L/min total), with 90% oxygen concentration (-3% / +6%) maintained at every setting. Pulse volume per breath varies with breathing rate and is tested to ISO 80601-2-67, ±15%.
Is the Resp-O2 approved for use on commercial flights, and is it latex-free?
The manufacturer has determined this device conforms to all applicable FAA acceptance criteria for POC carriage and use on board aircraft. The device is not made with natural rubber latex.
Rx Only: Federal (USA) law restricts this device to sale by or on the order of a physician. Buyers are responsible for confirming valid prescription/order documentation prior to purchase and dispensing. See EnhDme-Pro's Prescription (Rx) Policy for full requirements.
HCPCS Code Disclaimer: HCPCS codes are provided for reference only and are subject to change by CMS. Facilities are responsible for independently verifying current, applicable billing codes with their payer and compliance teams prior to claim submission.
California Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.